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Item No. 1 PC : 3-10-88 UP-88-20 Page 2 controls have been placed on the project as conditions of approval. REVISED PROJECT DESCRIPTION As proposed, the Terra Genesis facility will import soil con- taminated with petroleum products for treatment in order to reduce the toxic substances in the soil to acceptable levels . In essense , the decontamination process will "clean up" the soil so that it can be utilized for fill material or added to agri- cultural land. Terra Genesis is proposing a three-phase project : Phase I - Treatment of soil with a low contaminant level ( less than 200 mg/kg) ; Phase II - Treatment of soil with increasingly higher con- taminant levels under a Research Development and Demonstration (RD&D) permit issued by the Alternative Technology Section of the Department " of Health Services (DHS) (6,000 to 40 ,000 mg/kg) ; (Phase II (a) - 6 , 000 to 10,000 mg/kg; Phase II (b) - 10,000 to 20 ,000 mg/kg; Phase II (c) - 20 , 000 to 40 , 000 mg/kg; and Phase III - Full-scale treatment of contaminated soil under a hazardous waste facility permit issued by DHS . The contaminated soil for Phase I would be limited to an existing on-site supply, while contaminated soil for Phase II would be limited to a single off-site source, The cleansing process will entail several steps, with each treat- ment cycle lasting 2-3 weeks in the summer and 10-14 weeks in the winter . Upon arrival at the site, the contaminated soil will be spread on an 8 , 000-square-foot concrete slab to a depth of one to two feet and fertilized with nitrate and phosphorus (refer to Concrete Slab Detail) . The soil will be thoroughly mixed and wetted. A prepared bacterial additive will be placed on the soil , then thoroughly mixed and sprinkled with water to maintain a moist condition. This bioaugmentation process will reduce the toxic substances in the soil until Federal and State regulatory standards are met .